package com.itheima.service;

import com.itheima.domain.Member;

import java.util.List;
import java.util.Map;

public interface MemberService {
    Member findByTelephone(String telephone);

    void add(Member member);

    Map<String, Object> getMonthsAndMCount();

    List<Integer> findMemberCountByMonths(List<String> months);
}
